Issued Patents All Time
Showing 1–25 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10746448 | Controls and operation of variable frequency drives | Benjamin James Sykora, Nathan Thomas West, Dennis M. Beekman, Korwin Jay Anderson, Robert S. Bakkestuen | 2020-08-18 |
| 10352608 | Screw compressor drive control | Nathan Thomas West, Dennis M. Beekman, John R. Sauls | 2019-07-16 |
| 10314200 | Variable frequency drive operation to avoid overheating | Benjamin James Sykora, Nathan Thomas West, Korwin Jay Anderson | 2019-06-04 |
| 10295239 | Controls and operation of variable frequency drives | Nathan Thomas West, Benjamin James Sykora, Dennis M. Beekman, Korwin Jay Anderson, Robert S. Bakkestuen | 2019-05-21 |
| 10141733 | Variable frequency drive overvoltage protection | Nathan Thomas West, Korwin Jay Anderson | 2018-11-27 |
| 10101070 | Axial thrust control for rotary compressors | Nathan Thomas West, Dennis M. Beekman, Korwin Jay Anderson, Benjamin James Sykora | 2018-10-16 |
| 10003287 | Magnet degradation and damage controls and diagnostics for permanent magnet motors | Nathan Thomas West | 2018-06-19 |
| 9733002 | Screw compressor drive control | Nathan Thomas West, Dennis M. Beekman, John R. Sauls | 2017-08-15 |
| 9654048 | Variable frequency drive self-check | Nathan Thomas West, Benjamin James Sykora, Korwin Jay Anderson, Matthew A. Shepeck | 2017-05-16 |
| 9654049 | Variable frequency drive active harmonic mitigation controls and diagnostics | Nathan Thomas West, Benjamin James Sykora, Korwin Jay Anderson, William J. Walters | 2017-05-16 |
| 9647591 | Magnet degradation and damage controls and diagnostics for permanent magnet motors | Nathan Thomas West | 2017-05-09 |
| 9605886 | Axial thrust control for rotary compressors | Nathan Thomas West, Dennis M. Beekman, Korwin Jay Anderson, Benjamin James Sykora | 2017-03-28 |
| 9595905 | Refrigerant compressor drives offering enhanced robustness, efficiency and rated voltage operability | Nathan Thomas West, Dennis M. Beekman | 2017-03-14 |
| 9568208 | HVAC electrical system power supply packaging system | Nathan Thomas West, William J. Walters | 2017-02-14 |
| 9556875 | Centrifugal compressor assembly and method | Paul F. Haley, Dennis R. Dorman, Frederic Byron Hamm, Jr., James A. Kwiatkowski, Rick T. James +2 more | 2017-01-31 |
| 9525369 | Reverse rotation braking for a PM motor | Victor R. Stefanovic | 2016-12-20 |
| 9176193 | Method for monitoring a permanent magnet motor | Nathan Thomas West | 2015-11-03 |
| 8988028 | Reverse rotation braking for a PM motor | Victor R. Stefanovic | 2015-03-24 |
| 8875530 | Screw compressor drive control | Nathan Thomas West, Dennis M. Beekman, John R. Sauls | 2014-11-04 |
| 8627680 | Centrifugal compressor assembly and method | Paul H. Haley, Dennis R. Dorman, Frederic Byron Hamm, Jr., James A. Kwiatkowski, Rick T. James +2 more | 2014-01-14 |
| 8365544 | Screw compressor drive control | Nathan Thomas West, Dennis M. Beekman, John R. Sauls | 2013-02-05 |
| 8179157 | Setup and method for testing a permanent magnet motor | Nathan Thomas West | 2012-05-15 |
| 8037713 | Centrifugal compressor assembly and method | Paul F. Haley, Dennis R. Dorman, Frederic Byron Hamm, Jr., James A. Kwiatkowski, Rick T. James +2 more | 2011-10-18 |
| 7922467 | System for protecting bearings and seals of a refrigerant compressor | Robert M. Swanson, Joel S. Duga | 2011-04-12 |
| 6341493 | HVAC control and method for interpreting broad range of input voltages | Matthew A. Shepeck, Ali S. Ameen | 2002-01-29 |